Building efitools using gcc-15 fails due to lib/asn1/typedefs.h defining bool as a typedef of char, which is no longer allowed in C23 as bool is a keyword now. Reproducible: Always Steps to Reproduce: 1. emerge -1 efitools # with gcc-15 Actual Results: typedefs.h:55:23: error: ‘bool’ cannot be defined via ‘typedef’ 55 | typedef unsigned char bool; Expected Results: Emerge is successful. https://wiki.gentoo.org/wiki/Modern_C_porting#Fixes_.28C23.29 is likely relevant. Checking the efitools repository, it hasn't been updated in some years, so I'm unsure if upstream is still taking patches or not. In any case, I'm not sure what the "right" fix is here. For Gentoo, we can probably remove the offending typedef line and include stdbool.h (for pre gcc-15 compilers). For a more general solution, I get the impression this source code targets C89, for which stdbool.h doesn't exist. Another option is to define the typedef conditionally on __STDC_VERSION__, but the value for that in implementation defined (I'd be surprised if clang and gcc disagree about it, however). Here is my emerge info from the computer where I first encountered the issue: # emerge --info Portage 3.0.68 (python 3.13.3-final-0, default/linux/arm64/23.0/systemd, gcc-15, glibc-2.41-r1, 6.14.3-gentoo aarch64) ================================================================= System uname: Linux-6.14.3-gentoo-aarch64-with-glibc2.41 KiB Mem: 24558676 total, 11029708 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Wed, 07 May 2025 16:54:50 +0000 Head commit of repository gentoo: 3cdb5ab35389ef642395b46a4409916129070bf8 sh bash 5.2_p37-r3 ld GNU ld (Gentoo 2.44 p1) 2.44.0 app-misc/pax-utils: 1.3.8::gentoo app-shells/bash: 5.2_p37-r3::gentoo dev-build/autoconf: 2.72-r1::gentoo dev-build/automake: 1.17-r2::gentoo dev-build/cmake: 3.31.7::gentoo dev-build/libtool: 2.5.4::gentoo dev-build/make: 4.4.1-r100::gentoo dev-build/meson: 1.8.0::gentoo dev-java/java-config: 2.3.4::gentoo dev-lang/perl: 5.40.2::gentoo dev-lang/python: 3.13.3::gentoo dev-lang/rust-bin: 1.86.0-r1::gentoo sys-apps/baselayout: 2.17::gentoo sys-apps/sandbox: 2.46::gentoo sys-apps/systemd: 257.5::gentoo sys-devel/binutils: 2.44::gentoo sys-devel/binutils-config: 5.5.2::gentoo sys-devel/gcc: 15.1.0::gentoo sys-devel/gcc-config: 2.12.1::gentoo sys-kernel/linux-headers: 6.14::gentoo (virtual/os-headers) sys-libs/glibc: 2.41-r1::gentoo Repositories: gentoo location: /var/db/repos/gentoo sync-type: git sync-uri: https://anongit.gentoo.org/git/repo/sync/gentoo.git priority: -1000 volatile: False sync-git-verify-commit-signature: yes ACCEPT_KEYWORDS="arm64 ~arm64" ACCEPT_LICENSE="@FREE" CBUILD="aarch64-unknown-linux-gnu" CFLAGS="-O2 -pipe -march=native" CHOST="aarch64-unknown-linux-gnu" CONFIG_PROTECT="/etc /usr/share/gnupg/qualified.txt /var/bind" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d" CXXFLAGS="-O2 -pipe -march=native" DISTDIR="/var/cache/distfiles" ENV_UNSET="CARGO_HOME DBUS_SESSION_BUS_ADDRESS DISPLAY GDK_PIXBUF_MODULE_FILE GOBIN GOPATH PERL5LIB PERL5OPT PERLPREFIX PERL_CORE PERL_MB_OPT PERL_MM_OPT XAUTHORITY XDG_CACHE_HOME XDG_CONFIG_HOME XDG_DATA_HOME XDG_RUNTIME_DIR XDG_STATE_HOME" FCFLAGS="-O2 -pipe -march=native" FEATURES="assume-digests binpkg-docompress binpkg-dostrip binpkg-logs binpkg-multi-instance buildpkg-live config-protect-if-modified distlocks ebuild-locks export-pms-vars fixlafiles ipc-sandbox merge-sync merge-wait multilib-strict network-sandbox news parallel-fetch pid-sandbox pkgdir-index-trusted preserve-libs protect-owned qa-unresolved-soname-deps sandbox strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe -march=native" GENTOO_MIRRORS="http://distfiles.gentoo.org" LANG="en_US.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed -Wl,-z,pack-relative-relocs" LEX="flex" MAKEOPTS="-j4" PKGDIR="/var/cache/binpkgs" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" SHELL="/bin/bash" USE="acl arm64 bzip2 crypt gdbm iconv ipv6 libtirpc ncurses nls openmp pam pcre readline seccomp ssl systemd test-rust udev unicode xattr zlib" ADA_TARGET="gcc_14" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_anon authn_dbm authn_file authz_dbm authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir env expires ext_filter file_cache filter headers include info log_config logio mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="karbon sheets words" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_ARM="aes crc32 edsp sha1 sha2 v8 vfp vfp-d32 vfpv3 vfpv4" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock greis isync itrax navcom oceanserver oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 tsip tripmate tnt ublox" GUILE_SINGLE_TARGET="3-0" GUILE_TARGETS="3-0" INPUT_DEVICES="libinput" KERNEL="linux" LCD_DEVICES="bayrad cfontz glk hd44780 lb216 lcdm001 mtxorb text" LUA_SINGLE_TARGET="lua5-1" LUA_TARGETS="lua5-1" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php8-2" POSTGRES_TARGETS="postgres17" PYTHON_SINGLE_TARGET="python3_13" PYTHON_TARGETS="python3_13" RUBY_TARGETS="ruby32" VIDEO_CARDS="fbdev dummy" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipp2p iface geoip fuzzy condition tarpit sysrq proto logmark ipmark dhcpmac delude chaos account" Unset: ADDR2LINE, AR, ARFLAGS, AS, ASFLAGS, CC, CCLD, CONFIG_SHELL, CPP, CPPFLAGS, CTARGET, CXX, CXXFILT, ELFEDIT, EMERGE_DEFAULT_OPTS, EXTRA_ECONF, F77FLAGS, FC, GCOV, GPROF, INSTALL_MASK, LC_ALL, LD, LFLAGS, LIBTOOL, LINGUAS, MAKE, MAKEFLAGS, NM, OBJCOPY, OBJDUMP, PORTAGE_BINHOST, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS, PYTHONPATH, RANLIB, READELF, RUSTFLAGS, SIZE, STRINGS, STRIP, YACC, YFLAGS